/*
 * Copyright (C) 2008 Esmertec AG.
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.android.mms.drm;

import com.google.android.mms.util.SqliteWrapper;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.net.Uri;
import android.util.Log;
import java.io.IOException;
import java.io.OutputStream;

public class DrmUtils {
	private static final String TAG = "DrmUtils";
	private static final Uri DRM_TEMP_URI = Uri.parse("content://mms/drm");

	private DrmUtils() {
	}

	public static void cleanupStorage(Context context) {
		SqliteWrapper.delete(context, context.getContentResolver(), DRM_TEMP_URI, null, null);
	}

	public static Uri insert(Context context, DrmWrapper drmObj) throws IOException {
		ContentResolver cr = context.getContentResolver();
		Uri uri = SqliteWrapper.insert(context, cr, DRM_TEMP_URI, new ContentValues(0));
		OutputStream os = null;
		try {
			os = cr.openOutputStream(uri);
			byte[] data = drmObj.getDecryptedData();
			if (data != null) {
				os.write(data);
			}
			return uri;
		} finally {
			if (os != null) {
				try {
					os.close();
				} catch (IOException e) {
					Log.e(TAG, e.getMessage(), e);
				}
			}
		}
	}
}